59. What do the five Olympic rings s_____ for?

58. In the Games there are 311 _______(竞争对手) from just 13 countries.

57. It was difficult to save the palaces and buildings without destroying their old ______(美丽).

56. The old city wall was built in the Ming D__________ .

55. Some ancient sites have already been ______(损害) by tourists and villagers are worried that part of their history will be lost.

54. Strong, proud and _____(团结的), the people of St Petersburg are the modern heroes

53. It was under________(攻击) for 900 days, but the people of the city never gave in.

52.You may also _______(包括) a short message in any language in the box.

51. St Petersburg was almost in r______ : fires burned everywhere.

50.　 When you sit down at the table, you can take your napkin, ____(展开)it and put it on your lap.